I put mine in the freezer instead of the fridge, that is what the lady at First Impressions told me to do. Also dust your fondant and not your mold... if you dust the mold with cornstarch it will stick in the indentions and look funny.

Basically.... tint your fondant the color you want, roll it into a smooth ball, dust with cornstarch, squish into the mold (make sure you get it into all of the crevices), remove excess from back and flatten, freeze for 20 minutes, remove from mold, let assume room temperature and then dust/paint as wanted.